My lights are not working on my boat trailer, and I will be leaving in about 40 minutes. The brakes work and the signals work. No running lights. I checked my converter and the boat plug. I have no power (12 volts) on the 7 pin, on the running lights side. The first fin on the left from TDC. If I have my lights on the truck shoudn't the pin have 12 volts?

Thanks

 

Take the plug apart and see if theres power to the plug at that terminal. Wire could be corroded at the plug or the plug itself could be bad. It's been my experience if you use your trailer a lot, the plugs generally have to be replaced every couple years..good luck.

 

fuses?

 

make sure your BALL has good contact with the trailer. I have to shine my BALL up to get my horse trailer to light up.

 

I would say bad connection not a ground since all the lights share a ground off the hitch and the rest of the lights are working. Take the plug apart as mentioned earlier.

 

if you get your ground thru the hitch or ball your setup isnt right